Radiant|Natural|GIA

1.50ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 7558699630

Certificate GIA 7558699630

Diamond specifications and retailer prices

From £5,324 GBP
$7,134 USD
As of November 1, 2026
Save £4,152 GBP (44%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £11,373 GBP at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7558699630. Listed at 18 retailers as of November 1, 2026, with a 78% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7558699630
Dimensions7.80 × 5.67 × 3.85 mm
L/W Ratio1.38
Culet sizeNone
Top View
7.80 mm5.67 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7558699630
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £7,427 GBP|Low: £4,830 GBP|High: £9,591 GBP|Avg: £6,528 GBP|+53.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 8£4,893 GBP
Retailer 3£5,324 GBP
Retailer 10£5,662 GBP
Retailer 17£5,672 GBP
Retailer 16£5,686 GBP
Retailer 18£5,686 GBP
Retailer 4£5,734 GBP
Retailer 12£6,343 GBP
Retailer 15£6,401 GBP
Retailer 11£6,608 GBP
Retailer 5£6,762 GBP
Retailer 6£6,762 GBP
Retailer 19£6,806 GBP
Retailer 7£6,986 GBP
Retailer 1£7,427 GBP
Retailer 9£7,463 GBP
Retailer 2£7,488 GBP
Retailer 14£8,354 GBP
Retailer 13£9,476 GBP

26 data points across 19 retailers

18 retailers£5,324 GBP to £9,476 GBP

B+
Cheapest Retailer
-
£5,324 GBP
$7,134 USD
B+
Retailer 2
-
£5,672 GBP
$7,600 USD
View
B+
Retailer 3
-
£5,686 GBP
$7,619 USD
View
Final sale: no returns
Retailer 4
-
£5,686 GBP
$7,619 USD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
£5,734 GBP
$7,683 USD
View
Retailer 6
-
£6,160 GBP
$8,254 USD
View
Price last confirmed 40 days ago
B+
Retailer 7
-
£6,343 GBP
View
Retailer 8
-
£6,401 GBP
A$13,195 AUD
View
Price last confirmed 11 days ago
B+
Retailer 9
-
£6,762 GBP
$9,060 USD
View
B+
Retailer 10
-
£6,762 GBP
$9,060 USD
View
B+
Retailer 11
-
£6,806 GBP
$9,119 USD
View
B+
Retailer 12
-
£6,986 GBP
$9,360 USD
View
Retailer 13
-
£7,108 GBP
$9,524 USD
View
Price last confirmed 41 days ago
B+
Retailer 14
-
£7,427 GBP
€9,478 EUR
View
Retailer 15
-
£7,488 GBP
$10,033 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
£8,354 GBP
ZAR 180,831 ZAR
View
B
Retailer 17
-
£9,476 GBP
View
Most Expensive
NZ Jewellers
d798331c-044e-45db-a921-3ff71e24ba35 · Sep 20
£11,373 GBP
$15,239 USD
View
Price last confirmed 42 days ago
17 more retailers have this diamond
Prices start from £5,324 GBPSave up to £4,152 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.50ct Radiant
£5,324 GBP